What causes chromatic aberration in the objective lens of a telescope?
A) Reflection of light back and forth inside the lens produces multiple images and the overall combination of the images will be distorted.
B) Different colors are refracted through different angles at each surface of the lens.
C) Different colors suffer different amounts of absorption by the glass in the lens.
D) The shape of the lens surface distorts the image.

Question

Quizplus · Accepted Answer

Chromatic aberration occurs because different colors of light are refracted (bent) by different amounts as they pass through the lens. This causes the colors to focus at different distances from the lens, leading to a blurred or color-fringed image.

What Causes Chromatic Aberration in the Objective Lens of a Telescope